	<nav class="navbar navbar-default">
	  	<div class="container">
		    <div class="navbar-header">
		    	<img class="blog_head mt5 mr5" src="<?php echo base_url();?>public/img/blog_head.jpg ?>">
		      	<a class="lh40" href="<?php echo base_url().'index.php/article/'?>">孟锋的博客后台管理</a>
		    </div>
		    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
		      	<ul class="nav navbar-nav">
		      	 	<li <?php if($this->page_name=="article"){?> class="active" <?php }?> ><a href="<?php echo site_url('admin/article/index')?>">文章标题</a></li>
		      	 	<li <?php if($this->page_name=="catalog"){?> class="active" <?php }?> ><a href="<?php echo site_url('admin/catalog/index')?>">分类列表</a></li>
		      	</ul>
		    </div>
		</div>   
	</nav>